If you’ve ever tried to run a “citrus beverage kiosk” (read “lemonade stand”) in your thirties — as the National Post’s Steve Murray has — you’ll know just how easily business can be soured by changes in the weather. But the concept of seasonality is much more complicated than that. In this informatively comical illustrated video, FP Managing Editor Grant Ellis explains to Mr. Murray why business owners should always take seasonal adjustments into account and why they shouldn’t always freak out when they see a drop in year-over-year sales. As you’ll see, Mr. Murray was utterly fascinated.